Company lists · Data refreshed November 2026

Top 25 Phase i esa providers worldwide

RevenueBase identified 642 company matches for phase i esa providers worldwide as of November 2026 and tracks 4,971 professional contacts across them, including 1,869 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for phase i esa providers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for phase i esa providers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
642Companies
4,971Contacts tracked
1,869Verified emails
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The 25 largest phase i esa providers worldwide

Ranked by team size
Top 25 of 642 company matches for phase i esa providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSignal Hill, CA, United StatesHQ recorded Nov 6, 2026201-500234 contacts →

Exact match

“Patriot Environmental Services, a Crystal Clean company, is a leading environmental service provider with clients throughout the Southwestern United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“Perennial Environmental Services, LLC, has been providing technical environmental solutions and management with fresh perspectives and unparalleled efficiency since 2003.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchOrange, CA, United StatesHQ recorded Nov 6, 202651-200100 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“Aerostar SES LLC (ASL) is committed to delivering innovative solutions for our clients’ environmental, engineering, and remediation needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWichita, GA, United StatesHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“iSi provides environmental, health and safety facility support services to a wide variety of industries across the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBrossard, QC, CanadaHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Terrapex Environnement Ltée est une firme de consultants multidisciplinaires en environnement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“ALC provides a wide range of environmental services from testing and reporting on potentially unsafe or hazardous conditions (asbestos, lead paint, indoor air quality/mold, soil…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBridgewater, NJ, United StatesHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“Summit is a trusted leader in environmental industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMumbai, IndiaHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“ENVIRO ANALYSTS & ENGINEERS PVT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchClayton, MO, United StatesHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Environmental Operations Inc.(EOI) is a trusted partner in turnkey and specialized environmental services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Tauw Iberia is an independent environmental consultancy and engineering company established in 1989.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchToronto, ON, CanadaHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“ERIS is a leading provider of detailed environmental property risk research.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“CGAgeo is a leading environmental services company, specializing in a variety of essential activities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHoogeveen, NetherlandsHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Eco Reest is een ecologisch adviesbureau met bodem- en asbest expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCharleston, KY, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“GEL Engineering and GEL Engineering of NC provide environmental, engineering, surveying, and emissions testing services to our valued clients throughout the southeast and beyond.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“Metric Environmental, LLC is a DBE/MBE environmental consulting firm headquartered in Indianapolis, Indiana with additional offices in Gary, Indiana, Cincinnati, Ohio and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchColumbus, OH, United StatesHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“Lawhon & Associates, Inc.(L&A) provides full-service environmental and engineering consulting services to the public and private sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRichland, WA, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Environmental Assessment Services, LLC (EAS) is a member of the KOMAN Family of Companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchOjai, CA, United StatesHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Pax Environmental, Inc.(Pax) is a veteran-owned environmental consulting firm based in Ojai, California.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchOakland, CA, United StatesHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Established in 1986, ACC Environmental Consultants, Inc.(ACC) is an employee-owned full service environmental consulting and design firm recognized for its excellent and reliable…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchVaughan, ON, CanadaHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“Groundwater Environmental Management Services (GEMS), is the Environmental Specialist for the Construction Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrighton, MI, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“As part of PEA Group, ASTI Environmental helps clients turn environmental and ecological challenges into opportunities, combining technical expertise with creative problem-solving…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 202651-20044 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMontréal, QC, CanadaHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“ENVIRONNEMENT (ORTAM-ENVIRO) Vérification de conformité selon la réglementation en vigueur Évaluations environnementales (phase I) Caractérisations environnementales (phases II et…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Phase Engineering, LLC, was founded in 1993 and is a leading engineering and environmental consulting firm, serving clients nationwide to deliver trusted environmental solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 642 phase i esa providers worldwide

See the full list, filter by size, metro and specialty, and access 1,869 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Phase i esa providers worldwide at a glance

As of Nov 6, 2026
37.6%Verified-email coverage
7.7Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
400
11-50
187
51-200
44
201-500
3
501-1,000
1
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for phase i esa providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “phase i esa providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,869 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Phase i esa providers by location

2 lists · largest first

Every Phase i esa providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “phase i esa providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many phase i esa providers are there worldwide?

RevenueBase identified 642 company matches for phase i esa providers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Patriot Environmental Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most phase i esa providers?

The United States leads with 287 companies, followed by Canada (44). Every phase i esa providers list by country and city is linked on this page.

Which city has the most phase i esa providers?

Houston leads with 9 company records, followed by New York (8) and Sao Paulo (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,869 professional contacts with verified work emails tracked across these 642 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.